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ArduPilot ($24.95)
ArduPilot is a full-featured autopilot based on the Arduino open-source hardware platform. It uses infrared (thermopile) sensors for stabilization and GPS for navigation. Requires a GPS module and an infrared XY sensor (not included). The autopilot handles both stabilization and navigation, eliminating the need for a separate stabilization system. It also supports a "fly-by-wire" mode that can stabilize an aircraft when flying manually under RC control, making it easier and safer to fly.

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Funnel IO ($24.95)
Funnel I/O (FIO) is an Arduino compatible board designed by Shigeru Kobayashi, based on the original design from LilyPad. Features include -

• ATmega168V running at 8MHz
• Arduino Bootloader
• XBee socket
• Lithium Polymer battery compatible
• MAX1555 LiPo Charger
• Reset button
• On/Off Switch
• Status/Charge/RSSI LEDs

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Blimpduino kit ($89.99)
The Blimpduino kit is a very low-cost, open source, autonomous blimp kit. It consists of an Arduino-based blimp controller board with onboard infrared and ultrasonic sensors and an interface for an optional RC mode, a simple gondola with two vectoring (tilting) differential thrusters, and ground-based infrared beacon. Assembly is required, including soldering.

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Rainbowduino ($19)
Rainbowduino is an Arduino compatible controller board with professional LED driving capacity. Features include - No external circuit required, plug and shine!

• 24 constant current channels of 120mA each
• 8 super source driver channel of 500mA each
• Wide output voltage adaption from 5V-12VDC
• Dedicated GPIO and ADC
• Hardware Uart and I2C communication
• Easy cascading
• Small form and light weight

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Arduino Pro ($19.95)
It's blue and skinny! The Arduino Pro is a microcontroller board based on the ATmega168 (datasheet). It has 14 digital input/output pins (of which 6 can be used as PWM outputs), 6 analog inputs, an 8 MHz resonator, a battery power jack, a power switch, a reset button, and holes for mounting a power jack, an ICSP header, and pin headers. The Arduino Pro is intended for semi-permanent installation in objects or exhibitions. The board comes without pre-mounted headers, allowing the use of various types of connectors or direct soldering of wires. The pin layout is compatible with Arduino shields. The board can be powered with a battery, and runs at 3.3V. Features:

• ATmega168V running at 8MHz external resonator
• Low-voltage board needs no interfacing circuitry to popular 3.3V devices and modules (GPS, Accelerometers, sensors, etc)
• USB connection off board
• 3.3V regulator
• Reverse polarity protected
• DC input 3.3V up to 12V
• Resettable fuse prevents damage to board in case of short
• Power select switch acts as on/off switch

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Seeeduino ($23.99)
Another variation on the standard board but featuring some notable changes, including -

• Duplicate digital IO to 100mil grid for prototype board compatibility.
• Shrink componets height below female headers.
• Change Type-B USB port to Mini USB.
• Replace 3.5mm DC power Jack to battery 2 Pin plug.
• Reset and power indicator near RST button.
• Auto-reset selection.
• 3.3V Operating Voltage selection.
• Pin out UART for FTDI232 bit-bang operation.
• Pin out 2 extra ADC.
• Optional capacitor for improving 3.3V output performance.
• Pin out for I2C and sensors

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LilyPad Pro Kit ($49.95)
The LilyPad Arduino is a microcontroller board designed for wearables and e-textiles. It can be sewn to fabric and similarly mounted power supplies, sensors and actuators with conductive thread. The LilyPad Pro Kit gives you the full flexibility and power of the LilyPad system. Program the LilyPad main board to respond to physical changes in light, sound, or motion. Create displays of light, sound, and get physical feedback using the various LilyPad periphery boards. The kit includes -

• LilyPad Mainboard
• LilyPad Power Supply
• LilyPad USB Link
• Mini USB Cable

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Arduino Bare Bones kit ($19.99)
For those who'd prefer to build their own Arduino from the ground up, the Bare Bones kit let's you solder your way to microcontroller bliss. A good choice for permanent projects, the Bare Bones can be programmed with a USB-TTL Serial Cable
Requires USB Serial programming cable ($20)

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Freeduino ($23.99)
Another solderable Arduino kit, the Freeduino is compatible with standard expansion shields, has onboard USB port (like the standard Arduino), and is fully compatible with add-on shields. It also looks pretty darn cool in orange/yellow!

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DC Boarduino kit ($17.50)
An Arduino designed especially for use with an electronics breadboard, this Boarduino sports a standard DC jack for power and can be programmed with a USB-TTL Serial cable. Features include -

• Designed to plug into a breadboard for easy prototyping
• Petite size, only 3" x 0.8" (75mm x 20mm)
• All 'standard' pins are brought out - Digital 0 thru 13, Analog 0 thru 5, ARef, 5V, Ground, Vin and Reset
• Chip comes preprogrammed with a "no-wait" Arduino bootloader
• 2 LEDs, green power and red "pin 13" just like the Arduino Diecimila
• Available as a low cost kit with standard parts, so its never out of stock
• All through-hole parts are easy to solder
• Reset button
• ATmega168, running at 16.00 MHz, just like the lastest Arduino, the Diecimila
• 6-pin standard ICSP header
• Standard 2.1mm DC jack (just like the original) with 5V regulator to run on 7V-17V power
• 1N4001 diode protects against using incorrect wall adapter
• 6-pin header at the end for a USB-TTL cable
• Auto-reset capability when used with a USB-TTL cable

Requires USB Serial programming cable ($20)

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USB Boarduino ($25)

This clone acts just like an Arduino, and works with the latest Arduino software. For many projects it can even be preferrable! The kit includes all parts necessary, the assembly is straightforward and well documented.
This version of the Boarduino does not have a DC jack. That means you cant use a 9V adapter or battery holder with it (unless you build a 5V power supply). However it does have USB built in and you can power your project or USB or by using a Mintyboost kit (which takes 2 AA batteries)
The difficult-to-solder USB chip is already soldered and tested, so the kit is easy to make!

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iDuino ($17.82)
Another 'duino kit designed for use with electronics breadboards, the iDuino can be powered via USB and uses standard 5mm LEDs as status indicators.

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Sanguino ($25)
Monster Arduino! The Sanguino is an Arduino-compatible board that boasts 4x the memory, 4x the ram, and 12 extra pins. Its a sweet board that gives us some room to expand while still being completely through-hole for simple assembly.

Features:

• atmega644P core
• 32 total general purpose I/O pins (some are multipurpose)
• 8 analog pins
• 6 PWM pins
• 64K flash memory
• 4K RAM
• 2K EEPROM
• completely through-hole construction
• breadboard compatible
• 100% open source
• compatible with Arduino 0012 with minimal hacking

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Shields - hardware accessories that attach directly to Arduino

ScrewShield ($12)
The ScrewShield for Arduino is a "wing-format" shield that extends the Arduino pins to sturdy, secure, and dependable screw terminal blocks. The wing design allows you to extend just one or both sides (Analog and Digital) of the Arduino and still access its jumpers, LEDs, and buttons. Thanks to the ScrewShield's extra-long header pins, it can be stacked above or below other shields.

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SD Card Shield for Arduino ($13.95)
The SD Card Shield v2.1 for Arduino is a break out board for a standard SD Card. Now you can add mass storage and data logging to your project! Don't forget to grab an SD Card for cheap here.

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Shifty VU Shield ($19.99)
The Shifty VU Shield provides easy connection and filtering of audio input for the purpose of developing sound-reactive Arduino projects. It rectifies and smooths stereo audio from a 3.5mm jack, and provides ready to use voltage levels on the Arduino analog pins 2 and 3.

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7-Segment Shield ($39.99)
Features include -

• I2C 4 digits 7-segment driver
• I2C temperature sensor
• I2C EEPROM
• PWM RGB LED
• Blue PWR LED
• Reset button
• All pins breakout

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VoiceShield ($45.95)
This is the full VoiceShield kit. It is easy to build with only though hole parts. A great project for any one that wants to make their Arduino project "Really talk". It has all the parts needed to build a VoiceShield. You just add your own Arduino and either a basic 8 ohm speaker or powered speakers.

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Pocket Piano kit ($44.95)
This is a board for making the Arduino into a portable stand alone music synthesizer. It plugs directly into the Arduino board and provides 25 multiplexed keys (2 full octaves), 4 pots, status LED, reset switch, digital to analog converter IC, and a RCA audio jack. The Arduino board with its powerful AVR processor is more than adequate for a wide range of sound synthesis techniques. We have experimented with simple additive / wave-table synthesis, frequency modulation, ring modulation, sampling, polyphony, various arpeggiators. The whole thing can be powered over the Arduino's USB port for convenient experimenting. Arduino not included. The board is designed to mount easily to 1/8" panel material, and 1/2" round keys can be made out of wood or plastic. Features include -

• 25 keys and multiplexer circuitry
• 4 potentiometers, 1 controls output level
• Microchip MCP4921 12 bit SPI DAC
• Passive low pass output filter

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Waveshield Kit ($21.95) & 1GB SD Memory Card ($15)
Adding quality audio to an electronics project is surprisingly difficult. Here is a shield for Arduinos that solves this problem. It can play up to 22KHz, 12bit uncompressed audio files of any length. A great low cost easy-to-make kit. It has an onboard DAC, filter and op-amp for high quality output. Audio files are read off of an SD/MMC card, which are available at nearly any store. Volume can be controlled with the onboard thumbwheel potentiometer. This shield is a kit, and comes with all parts you need to build it. Arduino, SD card, tools, speaker and headphones are not included. It is fairly easy to construct and anyone with a successful soldering project under their belt should be able to build it.

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Danger Shield kit ($29.95)
The Danger Shield is an add-on for the Arduino micro controller board. It contains a variety of fun and useful electronic circuits that you can use to do fun and useful things. It is a fully self-contained shield. You plug it into your Arduino, and you can immediately start using it. No extra things to hook up, no external components. Just a really rad board ready to rock. Soldering required. Features include -

• 3x Linear sliders w/ integrated LEDs (independently hooked up to PWM)
• 3x Pushbuttons
• 2x Indicator LEDs (each with a PWM)
• 1x Piezo buzzer (for making noise!)
• 1x Temperature sensor
• 1x Light sensor
• 1x Knock sensor
• 1x 7 segment LED (with shift register)
• Power LED and reset button

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AVR HV Rescue Shield ($19)

The AVR HV Rescue Shield is a high voltage parallel mode fuse programmer for Atmel AVR microcontrollers. It currently supports the ATmega48/88/168/328P series and the ATtiny2313. The Rescue Shield is based on my Arduino-based AVR High Voltage Programmer, but with several new features and improvements.

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MotorShield for Arduino Kit ($19.50)
Put projects in motion with this kit's specialized connectivity for motors. The shield can accomodate -

• 2 connections for 5V 'hobby' servos with high-resolution dedicated timer - no jitter!
• 4 H-Bridges: L293D chipset provides 0.6A per bridge (1.2A peak) with thermal shutdown protection, internal kickback protection diodes. Can run motors on 4.5VDC to 36VDC.
• Up to 4 bi-directional DC motors with individual 8-bit speed selection (so, about 0.5% resolution)
• Up to 2 stepper motors (unipolar or bipolar) with single coil, double coil or interleaved stepping.

Features include -

• Big terminal block connectors to easily hook up wires (10-22AWG) and power
• Arduino reset button brought up top (Diecimila only)
• 2-pin terminal block and jumper to connect external power, for seperate logic/motor supplies
• Tested compatible with Diecimila (NG is next!)
• Download the easy-to-use Arduino software library, check out the examples and you're ready to go!

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Drum Kit Kit for Arduino ($18.95)
The Drum Kit Kit lets you turn your Arduino into a drum kit. Imagine the fun you could have building a drum kit and then rocking the house! The kit contains the electronic parts required to make a drum kit, including the circuit board, resistors, diodes, and pins. You supply the Arduino and the material to make the actual drum pads. Below you'll find easy instructions on how to make traditional-looking drum pads, but you could also stick the piezos (the part that senses the hits on the drum) to many different surfaces. Imagine playing your desk, lamp, and telephone, and rocking the cubicle!

ProtoShield kit ($15)
A great way to make your own custom shield for Arduino, the ProtoShield can accommodate a mini-breadboard or can be soldered to directly via its versatile perforated pattern. Features include -

• Reset button up top
• ICSP header
• Lots of GND and +5V rails
• DIP prototyping area makes it easy to add more chips
• SOIC prototyping area above USB jack for up to 14-pin SOIC chip, narrow medium or wide package.
• Use 'mini' or 'medium' breadboard
• Two 3mm LEDs with matching resistors
• Extra 6mm button

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ProtoShield for Arduino Mega Kit ($18.50)

An open-source prototyping shield for Arduino Mega, the ProtoShield kit has tons of cool features to make prototyping on your Arduino easy. With room for small or large breadboards for DIP chips, plus a surface-mount prototyping area too, you'll be testing all kinds of project ideas in no time. Features include -

• 1 MEGA Proto shield bare PCB
• 1 40 way male 0.1" strip
• 1 40x2 way male 0.1" strip
• 2 pushbuttons
• 5 220 Ohm resistors
• 5 1K Ohm resistors
• 5 10K Ohm resistors
• 3 LEDs

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XPortShield ($15.00) & X-Port ethernet module ($28)
Add Ethernet! Want your Arduino to check email? How about sending a twitter (which can then be easily forwarded to a phone via SMS)? Or grabbing data from a website? There are so many possibilities for projects that connect to the Internet to get data, now there's an easy way to do it with an Arduino. This shield kit allows you to add and use an XPort or XPort direct(+) Ethernet module (not included) using any 4 pins. All of the TCP/IP stack awfulness is done for you in the module so its super easy to just connect to any server. The kit does not include an Ethernet module! (but they can be purchased here)

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GPS Shield and data logger kit ($19.50) & GPS Module ($60)
GPS shield for Arduino kit with data-logging capability. After building this easy kit, you can create your own geo-locative project. Features include -

• This shield is designed to make GPS projects straight-forward and easy. Plug in a supported GPS module and run any of the example Arduino sketches for parsing GPS data (NMEA sentences), logging to a FAT16-formatted SD flash memory card and storing analog sensor data along with precise location, date and time in CSV format.
• The shield is designed specifically for use with the EM-406a module: the small surface-mount GPS connector is pre-soldered for you. (It is a high-quality engine with quick time-to-fix and excellent reception, even in downtown New York City!) It can also be used with a Tyco A1035D, EB-85A or Lassen IQ module. GPS module, Arduino, and SD memory card are not included.
• The examples work fine on ATmega168-based Arduino (or compatible). Run-time is approximately 3 hours with a 9V battery and up to 12 hours using a MintyBoost, assuming no power-saving features are enabled.
Please note that this shield does not come with a GPS module, they are sold separately

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Doublewide ExtenderShield kit ($18.33)
The shield-lover's shield! Liquidware's extension add-on provides more room for attaching multiple shields - also available in a double-tall format. Features -

• 4.2in tall x 2.7in wide
• 108mm tall x 69mm wide
• Arduino replicated mounting holes
• Arduino replicated plated through-holes
• Solderable dev area

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TouchShield Stealth ($135.95)

This high-end kit enhances Arduino's capabilities with a touch-sensitive OLED screen and built-in memory for graphics storage and more. Features include -

• 128×128 OLED Screen
• 262K Colors
• Touch Screen
• Powered from the Arduino's 5 VDC pins
• Only Uses Arduino Pins: 2 and 3
• Holds 60 Full Screen Images
• Compatible with Arduino Environment
• Arduino Graphics Core Ready to Go
• Draw Shapes, Pixels, Colors, Graphs, Buttons and More directly from the Arduino IDE

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InputShield ($39.36)
Eerily reminiscent of PlayStation joystick controls. Even vibrates with a rumble pack! Wanna make your own Arduino Game Boy? Arduino Genesis? Now you can. Features include-

• 1 Joy Stick
• 2 Buttons
• 1 Vibration Motor
• 2 Operating Modes
• Pass-through signal header
• Fits squarely on top of Arduino

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Arduino Ethernet Shield ($45)
The official ethernet offering from the Arduino development team, utilizing a WizNet w5100 chip. The Arduino Ethernet shield allows an Arduino board to connect to the internet using the Ethernet library. Connect the shield to your computer or a network hub or router using a standard ethernet cable (CAT5 or CAT6 with RJ45 connectors). Connecting to a computer may require the use of a cross-over cable (although many computers, including all recent Macs can do the cross-over internally). Fully assembled. SD Slot shown but not included or supported.

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Extras - Hardware add-ons & other items designed for use with Arduino

BlinkM MaxM ($24)
BlinkM MaxM is BlinkM's bigger, crazy sibling. It's an intensely bright smart LED for prototyping that comes as a package of 2 components: a control module (MaxM Master) and a daughter board with 3 ultrabright LEDs (MaxM Blaster). Makes virtually any RGB color and it's 1000 times as bright as a standard LED!

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Xbee adapter kit ($10)

Add wireless to your projects! This adapter board is designed to make adding wireless point-to-point or mesh networking easy. Adafruit looked at all the XBee adapter boards available and decided to design something better.
Features:

• Onboard 3.3V regulator to cleanly power your XBee, up to 250mA
• Level shifting circuitry means that its trivial to connect it to 5V circuitry such as an Arduino without risk of damage
• Two LEDs, one for activity (RSSI), the other for power (Associate)
• 10-pin 2mm sockets included to protect the modem and allow easy swapping, upgrading or recycling
• All the commonly used pins are brought out along the edge, making it easy to breadboard or wire up
• Specifically created for use with an FTDI cable to connect to a computer via USB. This means that you can use or upgrade the adapter with a computer simply by plugging in a cable
• For use with any XBee/Pro pin-compatible module

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Arduino/Seeeduino Harness ($6.75)
Secure your Arduino, Seeeduino or other clone along with a 9V power source. Comes with plug for Seeeduino and an extra 2.1mm DC jack to pin plug adapter but that doesn't fit the Arduinos. So Hack It! We'll throw in a compatible 2.1mm x 5.5mm x 9.5mm DC Plug for Arduino that you can rewire yourself - super easy! Drill it, hack it, shape it to whatever you need!

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Getting Started with Arduino ($12.99)
The perfect companion to your first Arduino, this valuable little book offers a thorough introduction to the open-source electronics prototyping platform that's taking the design and hobbyist world by storm. Getting Started with Arduino gives you lots of ideas for projects and helps you get going on them right away. Written by Massimo Banzi, co-founder of the Arduino Project. Covering topics such as -

• Interaction design and physical computing
• The Arduino hardware and software development environment
• Basics of electricity and electronics
• Prototyping on a solderless breadboard
• Drawing a schematic diagram

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Wooduino ($12.50)
Wooduino is a wooden prototyping platform for the Arduino. Available in two models, standard and deluxe.
The Wooduino Deluxe provides extra room to do more prototyping directly on the Wooduino or attach more and larger components to the Wooduino. The Wooduino Standard will fit on any desk and provides a great way to attach the Arduino to other projects, but still provides room to attach components and small breadboards.

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Bundles & Starter kits

Arduino Projects Pack ($99.95)
Bridging the gap between the "real world" and your computer, the Arduino Projects Pack takes you further into the world of physical computing. We've included all sorts of cool electronic parts this time that help you delve deeper into the true capacity of the Arduino. You'll experience what the tens of thousands of engineers, designers, artists, and hobbyists already know about this awesome and educational prototyping platform.

Advanced Arduino Starter Kit ($115)
Much like the Arduino Starter Kit before it -- but better! Bridging the gap between the "real world" and your computer, the Advanced Arduino Starter Kit takes you further into the world of physical computing. We've included all sorts of cool electronic parts this time, along with our best selling Making Things Talk book by Tom Igoe, that help you delve deeper into the true capacity of the Arduino. You'll experience what the tens of thousands of engineers, designers, artists and hobbyists already know about this awesome and educational prototyping platform.

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Arduino Starter Pack ($65)
Heard about Arduino but not sure how to start? Want to learn how to work with electronics and microcontrollers but need a little help? You've come to the right place! This bundle is designed to get you started quickly and easily on your path of learning electronics.

• Arduino Duemilanove w/Atmega328 - The latest and greatest Arduino revision, assembled and ready to go, including 4 rubber feet
• 3' USB cable - Perfect for connecting your Arduino to a computer
• Protoshield Kit - One of my designs, its got everything you need to make prototype designs using an Arduino. Note that this comes unassembled
• Tiny Breadboard - Fits on top of the protoshield, easy to use
• 9V DC regulated wall adapter - You can power your Arduino from any wall socket. This switching regulator is efficient and small and works with US (110V) and European (220V) power.
• 9V Battery case with switch and a 2.1mm plug- so you can power your arduino using a 9V battery. This case is much sturdier than just a battery clip and it has an on/off switch too! Note that this comes unassembled
• Tutorial starter pack parts - Includes a 10K potentiometer, 1K potentiometer, 2 small pushbuttons, 5 red diffused bright LEDs, one each of red, green and blue ultra-bright LED, 5 100 ohm resistors, 5 1K resistors, 5 10K resistors, and a CdS photocell sensor.
• Also includes 75 flexible breadboard wires in 8 colors, perfect for use with the solderless breadboard.

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Arduino Experimentation Kit - ARDX - v1.0 ($85)
Interested in making neat stuff with an Arduino but not sure where to start? This Arduino Experimentation kit includes all the pieces needed to complete 11 different circuits, along with a experimenter's guide booklet & breadboard layout sheets. Basically everything you need to be playing within minutes of its arrival.

Arduino Compatible Electronic Brick Starter Kit ($49.95)
Using this electronic brick starter kit, you can connect Arduino compatible boards easily with various digital, analog and I2C/Uart interfaces. These breadboard-less firm connections are ready to plug into extension modules like potentiometers, sensors, relays, servos...even buttons, just plug and play. You can start building projects even if you don't know how to solder, making it a good choice for beginners. Please Note: Arduino not included.